Showing 3,961 - 3,980 results of 4,095 for search '"spectroscopy"', query time: 0.06s Refine Results
  1. 3961

    Dye sensitized photocatalytic degradation of congo red and rhodamine B by 1,3,5-Benzenetricarboxylic acid based metal organic frameworks Ni3(BTC)2.12H2O, (Ni0.8Co0.2)3(BTC)2.12H2O... by Kavitha Karuppiah, Anushree Raju, Anuradha Natarajan, Swedha Mohan, Dhinakaran Subramani, Kumaran Rajendran, Vanjinathan Mahalingam, Gopalakrishnan Arumugam, Samikannu Prabu, Kung-Yuh Chiang, Vasanthi Rajaraman

    Published 2025-03-01
    “…Their structures were thoroughly characterized through various techniques, including PXRD, FE-SEM, EDX, HRTEM, FT-IR, Raman spectroscopy, TGA, and BET analysis. Despite their band gap energies exceeding 3 eV, which limits direct visible light absorption, the photocatalytic degradation was successful, suggesting a dye-sensitized mechanism. …”
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  2. 3962

    Frictional heat-assisted performance enhancement in dynamic Schottky contact of Al/Ag2Se-based tribovoltaic nanogenerator by Supakarn Worathat, Utchawadee Pharino, Phakkhananan Pakawanit, Arunothai Rattanachata, Rangson Muanghlua, Sugato Hajra, Hoe Joon Kim, Saichon Sriphan, Naratip Vittayakorn

    Published 2025-01-01
    “…The chemical composition and physical characteristics of the Ag2Se ceramic were analyzed using X-ray diffraction, scanning electron microscopy, and Synchrotron X-ray tomography techniques. UV–Vis spectroscopy and UPS were also utilized in order to validate the semiconducting property of the n-type Ag2Se ceramic. …”
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  3. 3963

    Energetic disorder dominates optical properties and recombination dynamics in tin-lead perovskite nanocrystals by Dandan Wang, Yusheng Li, Yongge Yang, Chao Ding, Yuyao Wei, Dong Liu, Hua Li, Huan Bi, Shikai Chen, Sujun Ji, Boyu Zhang, Yao Guo, Huiyun Wei, Hongshi Li, Shuzi Hayase, Qing Shen

    Published 2025-01-01
    “…Here, using temperature-dependent static and transient absorption spectroscopy, we meticulously distinguish the contributions of static disorder (including defects, impurities, etc.) and dynamic disorder (carrier–phonon interactions). …”
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  4. 3964

    Artificial weathering aging of PPT coatings made from recycled PET to protect concrete: Nanomechanical properties evaluation by Adrián Bórquez-Mendivil, Jorge Luis Almaral-Sánchez, Jesus Eduardo Leal-Perez, César Modesto-Acosta, Joaquin Flores-Valenzuela, Orlando Auciello, Blanca Alicia García-Grajeda, José Miguel Mendivil-Escalante, Sergio G. Flores-Gallardo, Roberto P. Talamantes-Soto, Abel Hurtado-Macías

    Published 2025-03-01
    “…The analysis of the molecular degradation of the PPT coatings was performed by Fourier transform infrared spectroscopy (FT-IR), which revealed that the rupture of C–H bonds caused the nanomechanical properties of the coatings to decrease; Hi = 200 ± 5 MPa to Hi = 32 ± 18 MPa, Hs = 125 ± 12 MPa to Hs = 12 ± 5 MPa and E = 5.1 ± 1.01 GPa to E = 1.05 ± 0.23 GPa.…”
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  5. 3965

    Influence of Ni, Al, W doping on microstructure, corrosion and wear resistance of HVOF spraying Fe-based amorphous alloy coatings by Chengwu Zhang, Lei Xie, Qiang Li, Guan Zhang, Chuntao Chang, Hongxiang Li, Xu Ma, Lin Liu

    Published 2025-03-01
    “…Mott–Schottky analysis and X-ray photoelectron spectroscopy results showed that the W-doped AACs forming the densest and thickest passivation films, ascribed to an increased fraction of protective and stable low-valent metal oxides (Fe2+/Cr3+/Mo4+), enhanced corrosion resistance by promoting film growth and degradation processes. …”
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  6. 3966

    Anti-Inflammatory, Antithrombotic, and Antioxidant Properties of Amphiphilic Lipid Bioactives from Shrimp by Alexandros Tsoupras, Paschalis Cholidis, Dimitrios Kranas, Evangelia Aikaterini Galouni, Anna Ofrydopoulou, Pavlos Efthymiopoulos, Katie Shiels, Sushanta Kumar Saha, George Z. Kyzas, Chryssa Anastasiadou

    Published 2024-12-01
    “…Structural analyses were performed using ATR-FTIR spectroscopy, while LC-MS was used to elucidate the fatty acid composition and overall structure of polar lipids (PLs) present in shrimp TAC extracts. …”
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  7. 3967

    AMINO-GRAFTED MESOPOROUS SILICA NANOPARTICLES: ASSESSMENT OF NEUROMODULATORY, MEMBRANOTROPIC AND ANTIOXIDANT PROPERTIES IN CORTEX NERVE TERMINALS by S. O. Sotnik, I. M. Pavliei, O.O. Pariiska, Y.I. Kurys, M.V. Dudarenko, A.А. Borysov, N. V. Krisanova, N. G. Pozdnyakova, L. M. Kalynovska, M. M. Driuk, A. O. Pastukhov, A. S. Tarasenko, V. G. Koshechko, S. V. Kolotilov, T. A. Borisova

    Published 2024-12-01
    “…Amino-grafted mesoporous silica nanoparticles (MSN-NH2) were synthesized by means of co-condensation of tetraethoxysilane and 3-aminopropyltriethoxysilane and characterized using TEM, IR-spectroscopy, and powder X-ray diffraction. Neuromodulatory and related properties of MSN-NH2 were evaluated using rat cortex nerve terminals (synaptosomes). …”
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  8. 3968

    Photoelectrochemical characterization and photocatalytic properties of mesoporous <mml:math alttext="${{{ext{TiO}}_{ext{2}} } mathord{left/ {vphantom {{{ext{TiO}}_{ext{2}} } {{ext...

    Published 2006-01-01
    “…The structural and optical properties of these films were characterized using SEM, low-angle XRD, and UV/Vis spectroscopy, hexane adsorption investigation. Band gap energy and the position of flatband potentials were estimated by photoelectrochemical measurements. …”
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  9. 3969

    Coagulants for water based on activated aluminum alloys by R.G. Sarmurzina, G.I. Boiko, B.K. Kenzhaliyev, U.S. Karabalin, N.P. Lyubchenko, P.V. Kenyaikin, Zh.B. Ilmaliyev

    Published 2023-10-01
    “…In addition, the goal is solving environmental issues associated with improving the drinking water quality and related to environmental pollution with wastewater.METHODS: The microstructures, phase components, and elemental compositions of alloys and reaction products were studied by scanning electron microscopy/energy dispersive X-ray spectroscopy. The thermal effects of alloys were investigated usin thermogravimetry methods. …”
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  10. 3970

    Adsorption of Anionic Surfactants onto Alumina: Characteristics, Mechanisms, and Application for Heavy Metal Removal by Thi Minh Thu Nguyen, Thi Phuong Thao Do, Thi Sim Hoang, Ngoc Viet Nguyen, Huy Dong Pham, Trung Dung Nguyen, Thi Ngoc Mai Pham, Thanh Son Le, Tien Duc Pham

    Published 2018-01-01
    “…Adsorption mechanisms were disused in detail on the basis of adsorption isotherm, the change in surface charge, and the change in functional surface groups by Fourier-transform infrared spectroscopy (FTIR). The application of surfactant adsorption onto Al2O3 to remove cadmium ion (Cd2+) was also studied. …”
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  11. 3971

    Antibiotic-mediated dysbiosis leads to activation of inflammatory pathways by Jemma J. Taitz, Jemma J. Taitz, Jian Tan, Jian Tan, Duan Ni, Duan Ni, Camille Potier-Villette, Camille Potier-Villette, Georges Grau, Georges Grau, Ralph Nanan, Ralph Nanan, Ralph Nanan, Laurence Macia, Laurence Macia, Laurence Macia

    Published 2025-01-01
    “…Caecal microbiota composition was assessed via 16S rRNA sequencing and caecal metabolites were quantified with NMR spectroscopy. Immune profiles of spleen and mesenteric lymph nodes (MLNs) were assessed by flow cytometry, and splenocytes assessed for ex vivo cytokine production. …”
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  12. 3972

    An HST Transmission Spectrum of the Closest M Dwarf Transiting Rocky Planet LTT 1445Ab by Katherine A. Bennett, David K. Sing, Kevin B. Stevenson, Hannah R. Wakeford, Zafar Rustamkulov, Natalie H. Allen, Joshua D. Lothringer, Ryan J. MacDonald, Nathan J. Mayne, Guangwei Fu

    Published 2025-01-01
    “…We use Hubble Space Telescope/Wide Field Camera 3 transmission spectroscopy with the G280 and G141 grisms to study the spectrum of LTT 1445Ab between 0.2 and 1.65 μ m. …”
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  13. 3973

    Phase transitions, Dirac and Weyl semimetal states in Mn1−x Ge x Bi2Te4 by A. M. Shikin, N. L. Zaitsev, T. P. Estyunina, D. A. Estyunin, A. G. Rybkin, D. A. Glazkova, I. I. Klimovskikh, A. V. Eryzhenkov, K. A. Kokh, V. A. Golyashov, O. E. Tereshchenko, S. Ideta, Y. Miyai, Y. Kumar, T. Iwata, T. Kosa, K. Kuroda, K. Shimada, A. V. Tarasov

    Published 2025-01-01
    “…Abstract Using angle-resolved photoemission spectroscopy (ARPES) and density functional theory (DFT), an experimental and theoretical study of changes in the electronic structure (dispersion dependencies) and corresponding modification of the energy band gap at the Dirac point (DP) for topological insulator (TI) $$\textrm{Mn}_{1-x} \textrm{Ge}_x \textrm{Bi}_2 \textrm{Te}_4$$ have been carried out with gradual replacement of magnetic Mn atoms by non-magnetic Ge atoms when concentration of the latter was varied from 10% to 75%. …”
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  14. 3974

    Laser interaction with undercritical foams of different spatial structures by J. Limpouch, V. Tikhonchuk, O. Renner, Sh. Agarwal, T. Burian, J. Červenka, J. Dostál, R. Dudžák, D. Ettel, A. Gintrand, L. Hudec, L. Juha, O. Klimo, M. Krupka, M. Krus, T. Lastovicka, R. Liska, W. Nazarov, S. K. Singh, M. Šilhavík, S. Weber

    Published 2025-01-01
    “…The spatial–temporal evolution of X-ray emission is observed using an X-ray streak camera, electron and ion temperatures are measured by X-ray spectroscopy, and hot-electron production is characterized by monochromatic X-ray imaging. …”
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  15. 3975

    Utilizing ultrasound for the extraction of polysaccharides from the tuber of Typhonium giganteum Engl.: Extraction conditions, structural characterization and bioactivities by Xi Peng, Jing-Ya Wang, Kui-Xu Gao, Zhi-Kun Wang, Qiao-Ling Deng, Yao Wang, Mei-Bian Hu, Yu-Jie Liu

    Published 2025-02-01
    “…No obvious difference was found in the Fourier transform infrared spectroscopy analysis of TGEP-U and TGEP-H. The Congo red and Circular dichroism tests demonstrated that TGEP-U and TGEP-H had non-three helical structure. …”
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  16. 3976

    Preparation of Tragopogon graminifolius-loaded electrospun nanofibers and evaluating its wound healing activity in a rat model of skin scar by Leila Almasi, Elham Arkan, Mohammad Hosein Farzaei, Amin Iranpanah, Cyrus Jalili, Fatemeh Abbaszadeh, Faranak Aghaz, Sajad Fakhri, Javier Echeverría

    Published 2025-01-01
    “…[Asteraceae] (TG), also called “Sheng” in traditional Iranian medicine, is one of the most efficacious plants for treating various skin injuries due to its several pharmacological and biological effects like anti-inflammatory and antioxidant properties.PurposeIn the present study, our objective was to assess the wound-healing activity of PVA/PEO/CS nanofibers containing TG in a rat model of excision wound repair.MethodsSynthesized nanofibers from PVA, PEO, and CS were done by the electrospinning method and confirmed by scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FT-IR). The release tests of nanofibers were assessed through the UV-visible method at different time intervals, which were conducted for about 60 h. …”
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  17. 3977

    Solar-driven production of renewable chemicals via biomass hydrogenation with green methanol by Guangyu Chen, Cenfeng Fu, Wenhua Zhang, Wanbing Gong, Jun Ma, Xiaomin Ji, Lisheng Qian, Xuefei Feng, Chuansheng Hu, Ran Long, Yujie Xiong

    Published 2025-01-01
    “…By combining in situ soft X-ray absorption spectroscopy with theoretical calculations, we successfully identify the dynamic evolution of Cu sites along with the biomass hydrogenation and methanol oxidation, where the tandem process is enabled by the photogenerated electrons and holes to complete a chemical cycle. …”
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  18. 3978

    RETRACTED ARTICLE: Synthesis of silver nanoparticles using Plantago lanceolata extract and assessing their antibacterial and antioxidant activities by Muhammad Zahir Shah, Zheng-Hui Guan, Ala Ud Din, Amjad Ali, Ata Ur Rehman, Kashif Jan, Shah Faisal, Shah Saud, Muhammad Adnan, Fazli Wahid, Saud Alamri, Manzer H. Siddiqui, Shamsher Ali, Wajid Nasim, Hafiz Mohkum Hammad, Shah Fahad

    Published 2021-10-01
    “…The existence of nanoparticles (NPs) was confirmed by color shift, atomic force microscopy (AFM), and UV–Vis’s spectroscopy. The FT-IR analysis indicated the association of biomolecules (phenolic acid and flavonoids) to reduce silver (Ag+) ions. …”
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  19. 3979

    Eco-friendly alginate/PCL-TiO2 hybrid biocomposites: Preparation, properties, and methylene blue photodegradation by Bunga Fisikanta Bukit, Agus Wedi Pratama, Erna Frida, Bakti Berlyanto Sedayu, Dina Fransiska, Deni Purnomo, Emma Rochima, Istiqomah Rahmawati, Sona Suhartana, Firda Aulya Syamani

    Published 2025-01-01
    “…XRD analysis of the composites PA, PA-Ti1, PA-Ti3, and PA-Ti5 revealed an orthorhombic to tetragonal semicrystalline structure after added TiO2. FT-IR spectroscopy show sharp peak at 1721 cm⁻¹ represents C = O vibration, while characteristic CH stretching vibrations of PCL are evident at 2800–2900 cm-1. …”
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    Article
  20. 3980